Optical Filters Manufacturer | Custom Precision Optical Components
Chenyu Optics is a custom optical filters manufacturer supplying precision spectral components for global B2B customers. Our filter solutions include bandpass filters, longpass filters, shortpass filters, neutral density filters, polarizing filters and infrared filters. Custom wavelength ranges, dimensions, substrates and coatings are available according to application requirements.
Optical Filters Overview
Optical filters are optical components designed to control which wavelengths of light are transmitted, blocked or attenuated within an optical system. They are used for wavelength selection, spectral transmission control, light intensity attenuation, polarization control and laser protection across a wide range of instruments.
Chenyu Optics manufactures optical filters for visible, UV, NIR and infrared applications using optical glass, fused silica and specialized filter substrates, covering bandpass, longpass, shortpass, neutral density, polarizing, infrared and laser line filter types.
Each optical filter is manufactured to customer requirements, with custom wavelength design, custom dimensions, coating options and dimensional inspection supporting projects from prototype quantities through OEM production volume.
Optical Filter Types
Select a filter type to view specifications, spectral data and ordering options.
Bandpass Filters
Transmit a defined wavelength band while blocking wavelengths outside the passband.
Function: Transmit Specific Wavelength Bands
Applications: Fluorescence / Imaging / Spectroscopy
Longpass Filters
Transmit wavelengths above a defined cutoff wavelength for spectral separation.
Function: Transmit Wavelengths Above Cutoff
Applications: Machine Vision / Imaging
Shortpass Filters
Transmit wavelengths below a defined cutoff wavelength for UV and visible imaging.
Function: Transmit Wavelengths Below Cutoff
Applications: UV / Visible Imaging
Neutral Density Filters
Reduce light intensity uniformly across the spectrum without shifting color balance.
Function: Reduce Light Intensity Without Changing Color
Applications: Cameras / Laser Systems
Polarizing Filters
Control the polarization state of transmitted light for display and measurement systems.
Function: Polarization Control
Applications: Display / Imaging / Measurement
Infrared Filters
Select or block infrared wavelength bands for thermal imaging and IR sensor systems.
Function: Infrared Wavelength Selection
Applications: Thermal Imaging / IR Sensors
Laser Line Filters
High-precision narrowband filtering matched to specific laser wavelengths.
Function: High Precision Laser Wavelength Filtering
Applications: Laser Systems / Optical Instruments
Machine Vision Filters
Improve image contrast and spectral response for industrial camera systems.
Function: Improve Image Contrast and Spectral Response
Applications: Industrial Cameras / Inspection Systems
Optical Filter Type Comparison
Reference guide for selecting optical filter type based on spectral function and application.
| Filter Type | Spectral Function | Typical Wavelength Range | Applications |
|---|---|---|---|
| Bandpass | Transmits a defined wavelength band | UV – NIR (custom center wavelength) | Fluorescence, imaging, spectroscopy |
| Longpass | Transmits wavelengths above cutoff | Visible – NIR (custom cutoff) | Machine vision, imaging systems |
| Shortpass | Transmits wavelengths below cutoff | UV – Visible (custom cutoff) | UV imaging, visible imaging |
| Neutral Density | Attenuates light intensity uniformly | UV – NIR (broadband) | Cameras, laser power control |
| Polarizing | Controls polarization state | Visible – NIR | Display, imaging, measurement |
| Infrared | Selects or blocks IR wavelength bands | NIR – LWIR | Thermal imaging, IR sensors |
| Laser Line | Narrowband transmission at laser wavelength | 266 nm – 10.6 μm (custom) | Laser systems, optical instruments |
Custom Optical Filter Manufacturing Capability
All optical filters are produced in-house. Cutting, coating and spectral testing are not outsourced.
Custom Filter Design
Custom wavelength range and transmission curve requirements manufactured to customer specifications, with dimensional tolerance held to application needs.
Precision Cutting and Polishing
Cutting, edging and polishing of optical glass, fused silica and specialized filter substrates to defined dimensions and surface quality.
Optical Coating
AR coating, IR coating and laser coating applied to precise spectral transmission and reflection requirements, including custom multi-band designs.
Spectral Testing
Transmission curve measurement across the specified wavelength range to verify filter performance against the required specification.
Quality Inspection
Dimensional, surface quality and coating performance verified before every shipment, with material certificates available on request.
Why Choose Chenyu Optics for Optical Filters
Chenyu Optics is a direct optical filters manufacturer. Production is handled in-house — material procurement, precision cutting, coating and spectral testing are not outsourced. Customers work directly with the manufacturer on specifications and delivery.
Applications of Optical Filters
Fluorescence Imaging
Bandpass and longpass filters isolating excitation and emission wavelengths in fluorescence microscopy systems.
Machine Vision
Bandpass and machine vision filters improving image contrast for industrial camera systems.
Laser Systems
Laser line and ND filters for beam attenuation, wavelength isolation and laser safety applications.
Spectroscopy
Bandpass and longpass filters for wavelength selection in spectroscopic and analytical instruments.
Infrared Imaging
Infrared filters for thermal camera systems and IR sensor wavelength selection.
Scientific Instruments
Optical filters for spectrometers, laboratory instruments and research optical systems.
Optical Filters FAQ
What types of optical filters can you manufacture?
Chenyu Optics manufactures bandpass, longpass, shortpass, neutral density, polarizing, infrared, laser line and machine vision filters. Filters are produced in optical glass, fused silica and specialized filter substrates for visible, UV, NIR and infrared applications.
Can you customize wavelength ranges and dimensions?
Yes. Chenyu Optics manufactures optical filters to customer specifications. Center wavelength, cutoff wavelength, bandwidth, dimensions and thickness tolerance can all be specified, from prototype quantities to repeat OEM orders.
What filter materials are available?
Available substrates include optical glass and fused silica for visible and UV applications, and silicon or germanium substrates for infrared filters. Polarizing filters combine optical glass with a polarizing film layer.
What coating options are available?
Standard coatings include AR coating, IR coating and laser-line coating, with custom coating designs available for specific wavelengths, multi-band requirements or high-power laser applications.
Can you provide transmission curves?
Yes. Spectral transmission is measured across the specified wavelength range, and transmission curve data is available on request to support incoming quality control on the customer side.
How can I request a quotation?
Send your filter type, wavelength requirement, dimensions, coating and quantity to /contact/. Chenyu Optics will review the specifications and provide a production recommendation and quotation.
Need Custom Optical Filters?
Send your wavelength requirements, drawings or specifications. Chenyu Optics provides precision optical filter manufacturing from prototype to production.